Shakespeare, David Bowie, Dr. Who, the Saxons, Druids and Romans are all claimed to have all made their mark on these massive man made tunnels.

Once thought to be the mysterious work of a witchy prophetess, a well with unusual properties turns objects into "stone".

Famously misunderstood wonder of the ancient world

This lonely cast-iron structure is the only wave-washed lighthouse of its kind left in all of Britain.

The last four extravagant street signs of London's historic banking street.

A portly statue of a golden boy commemorates an unusual cause of the Great Fire of London: the sin of gluttony.

The watery entrance for condemned prisoners heading to the Tower of London is still visible along the Thames.

Ship-sized kinetic sculptural fantasy.

This one has sailed five times as far as Sir Francis Drake's famous ship.

A community of artists and entrepreneurs seeks a simpler life on London's waterways.

Thanks to modern navigational tools we now know that the true prime meridian runs through a park next door.

A naturally mummified 2,000-year-old man.

Giant, friendly pelicans in Central London, the most unlikely of places.

This massive collection of British military artifacts includes the heartbreaking personal letters of the men in the trenches of WWI.

Eighty million natural history specimens call this gargantuan museum home.

Scattered throughout London are ancient remnants of the city's former bounding wall.

Catacombs turned marketplace.

A 2000-year-old Roman amphitheater lies just below Guildhall Yard.

Rebuilt remains of a temple to Roman god Mithras.

A 1,215-foot tunnel transports pedestrians beneath the River Thames.

Hear the quietest sound from across the dome.

One part local history, 99 parts gruesome haunted house.

This ornate Victorian marketplace was the setting for Diagon Alley and the Leaky Cauldron in the Harry Potter films.

London's creepiest cemetery was once the site of dueling magicians and mobs of stake-carrying vampire hunters.